JPS5514145A - Weld seam center determining method - Google Patents

Weld seam center determining method

Info

Publication number
JPS5514145A
JPS5514145A JP8612378A JP8612378A JPS5514145A JP S5514145 A JPS5514145 A JP S5514145A JP 8612378 A JP8612378 A JP 8612378A JP 8612378 A JP8612378 A JP 8612378A JP S5514145 A JPS5514145 A JP S5514145A
Authority
JP
Japan
Prior art keywords
center
weld seam
magnetic flux
seam
coils
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP8612378A
Other languages
Japanese (ja)
Other versions
JPS6133133B2 (en
Inventor
Toshihiro Mori
Seigo Ando
Hironobu Akusawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JFE Engineering Corp
Original Assignee
NKK Corp
Nippon Kokan Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NKK Corp, Nippon Kokan Ltd filed Critical NKK Corp
Priority to JP8612378A priority Critical patent/JPS5514145A/en
Priority to US06/057,029 priority patent/US4303883A/en
Priority to DE2928899A priority patent/DE2928899C2/en
Publication of JPS5514145A publication Critical patent/JPS5514145A/en
Publication of JPS6133133B2 publication Critical patent/JPS6133133B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/003—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring position, not involving coordinate determination
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/12—Automatic feeding or moving of electrodes or work for spot or seam welding or cutting
    • B23K9/127—Means for tracking lines during arc welding or cutting
    • B23K9/1272—Geometry oriented, e.g. beam optical trading
    • B23K9/1276—Using non-contact, electric or magnetic means, e.g. inductive means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q35/00—Control systems or devices for copying directly from a pattern or a master model; Devices for use in copying manually
    • B23Q35/04—Control systems or devices for copying directly from a pattern or a master model; Devices for use in copying manually using a feeler or the like travelling along the outline of the pattern, model or drawing; Feelers, patterns, or models therefor
    • B23Q35/08—Means for transforming movement of the feeler or the like into feed movement of tool or work
    • B23Q35/12—Means for transforming movement of the feeler or the like into feed movement of tool or work involving electrical means
    • B23Q35/127—Means for transforming movement of the feeler or the like into feed movement of tool or work involving electrical means using non-mechanical sensing
    • B23Q35/13—Sensing by using magnetic means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/28—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring contours or curvatures
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
    • G01D5/20—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature
    • G01D5/22—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature differentially influencing two coils
    • G01D5/225—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature differentially influencing two coils by influencing the mutual induction between the two coils
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
    • G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/22—Details, e.g. general constructional or apparatus details
    • G01N29/24—Probes
    • G01N29/2412—Probes using the magnetostrictive properties of the material to be examined, e.g. electromagnetic acoustic transducers [EMAT]
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/10—Number of transducers
    • G01N2291/105—Number of transducers two or more emitters, two or more receivers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/26—Scanned objects
    • G01N2291/267—Welds
    • G01N2291/2675—Seam, butt welding

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Biochemistry (AREA)
  • Pathology (AREA)
  • Mechanical Engineering (AREA)
  • Immunology (AREA)
  • General Health & Medical Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Plasma & Fusion (AREA)
  • Electrochemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Geometry (AREA)
  • Automation & Control Theory (AREA)
  • Electromagnetism (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)

Abstract

PURPOSE: To determine the center of weld seam, by AC-magnetizing a steel pipe, and detecting the leakage magnetic flux thereof.
CONSTITUTION: When an AC current is supplied to magnetization coils 2, 2', the AC magnetic flux of magnetization yoke 3 passes through a steel pipe 1. Of this passing magnetic flux, by the magnetic flux leaking from the weld seam, induced voltages E0 (A), e'0 (B) are created in search coils 4, 4'. When the seam 5 is deviated from the center of the search coils 4, 4', the pulse wave peak value of signal voltage e'0 becomes larger than e0. Then, removing the fundamental wave components by a differential amplifier 6, the signal voltage e1 (C) of the difference berween e'0 and e0 is outputted. In consequence, the output voltage e3 obtained by sampling the instantaneous value at every period T by a gate circuit 7 is inverted in polarity from positive to negative. Therefore, by setting so that the value of e3 may become 0V when the center of the seam coincides with the center of search coils 4, 4', the center of the weld seam is determined.
COPYRIGHT: (C)1980,JPO&Japio
JP8612378A 1978-07-17 1978-07-17 Weld seam center determining method Granted JPS5514145A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP8612378A JPS5514145A (en) 1978-07-17 1978-07-17 Weld seam center determining method
US06/057,029 US4303883A (en) 1978-07-17 1979-07-12 Apparatus for detecting the center of a welded seam in accordance with fundamental harmonic component suppression
DE2928899A DE2928899C2 (en) 1978-07-17 1979-07-17 Device for determining the size and direction of the lateral deviation of a test head from the center line of a weld seam

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8612378A JPS5514145A (en) 1978-07-17 1978-07-17 Weld seam center determining method

Publications (2)

Publication Number Publication Date
JPS5514145A true JPS5514145A (en) 1980-01-31
JPS6133133B2 JPS6133133B2 (en) 1986-07-31

Family

ID=13877917

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8612378A Granted JPS5514145A (en) 1978-07-17 1978-07-17 Weld seam center determining method

Country Status (3)

Country Link
US (1) US4303883A (en)
JP (1) JPS5514145A (en)
DE (1) DE2928899C2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH038586A (en) * 1989-06-05 1991-01-16 Suzukou Shoji Kk Instrument for detecting seamed position
JP2006208224A (en) * 2005-01-28 2006-08-10 Nippon Steel Corp Device for inspecting butt-welded part of steel sheet, and inspection method using it
JP4766472B1 (en) * 2010-10-22 2011-09-07 国立大学法人 岡山大学 Nondestructive inspection apparatus and nondestructive inspection method

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK145777C (en) * 1981-01-20 1983-08-22 Dansk Svejsemaskine CONTAINER ORIENTATION MECHANISM
EP0071334A1 (en) * 1981-06-12 1983-02-09 THE GENERAL ELECTRIC COMPANY, p.l.c. Device for measuring the length of a path
DE3381095D1 (en) * 1982-05-13 1990-02-15 Weidmueller C A Gmbh Co INDUCTIVE MEASUREMENT ARRANGEMENT OR SENSOR ARRANGEMENT AND USE THEREOF.
LU84209A1 (en) * 1982-06-17 1984-03-07 Cen Centre Energie Nucleaire INSTALLATION FOR DETERMINING THE POSITION OF A METAL BODY IN AN ELECTRICALLY CONDUCTIVE MEDIUM
US4800978A (en) * 1984-11-09 1989-01-31 Nec Corporation Magnetic object detecting system for automated guided vehicle system
US4916391A (en) * 1984-11-15 1990-04-10 Doerman Eryk S LVDT displacement sensor with signal noise reduction for use in weighing apparatus
US4930364A (en) * 1988-10-05 1990-06-05 Emhart Industries, Inc. Glass container inspecting machine
GB2233763B (en) * 1989-07-07 1994-06-15 Univ Essex Non-destructive testing of metals
FR2692977B1 (en) * 1992-06-26 1996-12-06 Aerospatiale NON-DESTRUCTIVE WELDING CONTROL PROCESS.
US5592078A (en) * 1994-11-29 1997-01-07 Dapco Industries, Inc. Method and apparatus for moving along a boundary between electromagnetically different materials
GB0112983D0 (en) * 2001-05-30 2001-07-18 Advanced Eng Solutions Ltd Pipe condition detecting apparatus
US6964364B2 (en) * 2003-04-22 2005-11-15 Parada Michael W Weld guidance system and method
EP1574850A1 (en) * 2004-03-08 2005-09-14 Siemens Aktiengesellschaft Apparatus for non-destructive detection of deep defects in electric conducting materials
CN101327545B (en) * 2008-05-12 2012-02-01 湘潭大学 Real time technique for tracking weld joints of gas metal arc welding by magnetic controlled electric arc sensor
CN103353478B (en) * 2013-06-28 2016-02-03 厦门大学 The compound lossless detection method of a kind of magnetosonic imaging and leakage field imaging
CN104588927A (en) * 2014-11-28 2015-05-06 柳州振业焊接机电设备制造有限公司 Symmetric automatic welding driving system
CN106152922B (en) * 2016-06-15 2018-10-12 山东固特电气有限公司 Location of the core method applied to rotor of large turbo-type generator hub of a spool point location judgment means
EP3779430A4 (en) * 2018-03-27 2021-12-22 Nippon Steel Corporation Method and device for detecting metal residue in electric-resistance-welded steel pipe
CN108982651A (en) * 2018-08-09 2018-12-11 苏州热工研究院有限公司 Exchange leakage field sensor based on ferromagnetic butt plates welding seam crack detection and the method using its progress crack detection
FR3098915B1 (en) * 2019-07-19 2022-07-29 Framatome Sa Magnetic flux leakage testing device and associated method

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3359486A (en) * 1963-08-06 1967-12-19 Bethlehem Steel Corp Eddy current seam tracking device utillizing an e-shaped core with electromagnetically unequal pickup coils
US3430134A (en) * 1966-08-26 1969-02-25 Magnaflux Corp Weld tracker system having magnetically isolated pickup coils
US3588682A (en) * 1967-11-28 1971-06-28 Forster F M O System for inspecting a welded seam with means for generating a signal which is a function of the welding temperature
US3617874A (en) * 1970-04-13 1971-11-02 Foerster Friedrich M O Magnetic leakage field flaw detector utilizing two ring core sensors
LU61704A1 (en) * 1970-09-17 1972-06-27
US4030026A (en) * 1974-11-25 1977-06-14 White's Electronics, Inc. Sampling metal detector

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH038586A (en) * 1989-06-05 1991-01-16 Suzukou Shoji Kk Instrument for detecting seamed position
JP2006208224A (en) * 2005-01-28 2006-08-10 Nippon Steel Corp Device for inspecting butt-welded part of steel sheet, and inspection method using it
JP4568128B2 (en) * 2005-01-28 2010-10-27 新日本製鐵株式会社 Steel plate butt weld inspection device and inspection method using this device
JP4766472B1 (en) * 2010-10-22 2011-09-07 国立大学法人 岡山大学 Nondestructive inspection apparatus and nondestructive inspection method

Also Published As

Publication number Publication date
DE2928899A1 (en) 1980-01-31
DE2928899C2 (en) 1986-10-30
JPS6133133B2 (en) 1986-07-31
US4303883A (en) 1981-12-01

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